1111 lines
38 KiB
C++
1111 lines
38 KiB
C++
// Wx Radar background texture
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//
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// Written by Harald JOHNSEN, started May 2005.
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// With major amendments by Vivian MEAZZA May 2007
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// Ported to OSG by Tim Moore Jun 2007
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//
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//
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// Copyright (C) 2005 Harald JOHNSEN
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//
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// This program is free software; you can redistribute it and/or
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// modify it under the terms of the GNU General Public License as
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// published by the Free Software Foundation; either version 2 of the
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// License, or (at your option) any later version.
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//
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// This program is distributed in the hope that it will be useful, but
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// WITHOUT ANY WARRANTY; without even the implied warranty of
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// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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// General Public License for more details.
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//
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// You should have received a copy of the GNU General Public License
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// along with this program; if not, write to the Free Software
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// Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
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//
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//
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#ifdef HAVE_CONFIG_H
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# include "config.h"
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#endif
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#include <osg/Array>
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#include <osg/Geometry>
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#include <osg/Matrixf>
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#include <osg/PrimitiveSet>
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#include <osg/StateSet>
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#include <osg/Version>
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#include <osgDB/ReaderWriter>
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#include <osgDB/WriteFile>
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#include <simgear/constants.h>
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#include <simgear/misc/sg_path.hxx>
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#include <simgear/scene/model/model.hxx>
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#include <simgear/structure/exception.hxx>
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#include <simgear/misc/sg_path.hxx>
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#include <simgear/math/sg_geodesy.hxx>
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#include <sstream>
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#include <iomanip>
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using std::stringstream;
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using std::endl;
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using std::setprecision;
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using std::fixed;
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using std::setw;
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using std::setfill;
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using std::string;
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#include <Main/fg_props.hxx>
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#include <Main/globals.hxx>
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#include "panel.hxx" // for FGTextureManager
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#include "od_gauge.hxx"
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#include "wxradar.hxx"
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#include <iostream> // for cout, endl
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using std::cout;
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using std::endl;
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static const float UNIT = 1.0f / 8.0f; // 8 symbols in a row/column in the texture
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static const char *DEFAULT_FONT = "typewriter.txf";
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wxRadarBg::wxRadarBg(SGPropertyNode *node) :
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_name(node->getStringValue("name", "radar")),
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_num(node->getIntValue("number", 0)),
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_time(0.0),
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_interval(node->getDoubleValue("update-interval-sec", 1.0)),
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_elapsed_time(0),
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_persistance(0),
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_odg(0),
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_range_nm(0),
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_scale(0),
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_angle_offset(0),
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_view_heading(0),
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_x_offset(0),
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_y_offset(0),
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_radar_ref_rng(0),
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_lat(0),
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_lon(0),
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_antenna_ht(node->getDoubleValue("antenna-ht-ft", 0.0)),
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_resultTexture(0),
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_wxEcho(0),
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_font_size(0),
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_font_spacing(0)
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{
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string branch;
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branch = "/instrumentation/" + _name;
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_Instrument = fgGetNode(branch.c_str(), _num, true);
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const char *tacan_source = node->getStringValue("tacan-source", "/instrumentation/tacan");
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_Tacan = fgGetNode(tacan_source, true);
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_font_node = _Instrument->getNode("font", true);
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#define INITFONT(p, val, type) if (!_font_node->hasValue(p)) _font_node->set##type##Value(p, val)
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INITFONT("name", DEFAULT_FONT, String);
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INITFONT("size", 8, Float);
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INITFONT("line-spacing", 0.25, Float);
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INITFONT("color/red", 0, Float);
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INITFONT("color/green", 0.8, Float);
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INITFONT("color/blue", 0, Float);
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INITFONT("color/alpha", 1, Float);
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#undef INITFONT
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_font_node->addChangeListener(this, true);
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}
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wxRadarBg::~wxRadarBg ()
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{
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_font_node->removeChangeListener(this);
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delete _odg;
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}
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void
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wxRadarBg::init ()
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{
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_serviceable_node = _Instrument->getNode("serviceable", true);
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_sceneryLoaded = fgGetNode("/sim/sceneryloaded", true);
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// texture name to use in 2D and 3D instruments
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_texture_path = _Instrument->getStringValue("radar-texture-path",
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"Aircraft/Instruments/Textures/od_wxradar.rgb");
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_resultTexture = FGTextureManager::createTexture(_texture_path.c_str(), false);
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string path = _Instrument->getStringValue("echo-texture-path",
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"Aircraft/Instruments/Textures/wxecho.rgb");
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SGPath tpath = globals->resolve_aircraft_path(path);
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// no mipmap or else alpha will mix with pixels on the border of shapes, ruining the effect
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_wxEcho = SGLoadTexture2D(tpath, NULL, false, false);
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_Instrument->setFloatValue("trk", 0.0);
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_Instrument->setFloatValue("tilt", 0.0);
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_Instrument->setStringValue("status", "");
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// those properties are used by a radar instrument of a MFD
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// input switch = OFF | TST | STBY | ON
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// input mode = WX | WXA | MAP
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// output status = STBY | TEST | WX | WXA | MAP | blank
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// input lightning = true | false
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// input TRK = +/- n degrees
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// input TILT = +/- n degree
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// input autotilt = true | false
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// input range = n nm (20/40/80)
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// input display-mode = arc | rose | map | plan
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_odg = new FGODGauge;
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_odg->setSize(512);
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_ai_enabled_node = fgGetNode("/sim/ai/enabled", true);
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_user_lat_node = fgGetNode("/position/latitude-deg", true);
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_user_lon_node = fgGetNode("/position/longitude-deg", true);
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_user_alt_node = fgGetNode("/position/altitude-ft", true);
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_user_speed_east_fps_node = fgGetNode("/velocities/speed-east-fps", true);
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_user_speed_north_fps_node = fgGetNode("/velocities/speed-north-fps", true);
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_tacan_serviceable_node = _Tacan->getNode("serviceable", true);
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_tacan_distance_node = _Tacan->getNode("indicated-distance-nm", true);
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_tacan_name_node = _Tacan->getNode("name", true);
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_tacan_bearing_node = _Tacan->getNode("indicated-bearing-true-deg", true);
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_tacan_in_range_node = _Tacan->getNode("in-range", true);
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_radar_mode_control_node = _Instrument->getNode("mode-control", true);
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_radar_coverage_node = _Instrument->getNode("limit-deg", true);
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_radar_ref_rng_node = _Instrument->getNode("reference-range-nm", true);
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_radar_hdg_marker_node = _Instrument->getNode("heading-marker", true);
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SGPropertyNode *n = _Instrument->getNode("display-controls", true);
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_radar_weather_node = n->getNode("WX", true);
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_radar_position_node = n->getNode("pos", true);
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_radar_data_node = n->getNode("data", true);
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_radar_symbol_node = n->getNode("symbol", true);
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_radar_centre_node = n->getNode("centre", true);
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_radar_rotate_node = n->getNode("rotate", true);
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_radar_tcas_node = n->getNode("tcas", true);
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_radar_absalt_node = n->getNode("abs-altitude", true);
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_radar_centre_node->setBoolValue(false);
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if (!_radar_coverage_node->hasValue())
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_radar_coverage_node->setFloatValue(120);
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if (!_radar_ref_rng_node->hasValue())
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_radar_ref_rng_node->setDoubleValue(35);
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if (!_radar_hdg_marker_node->hasValue())
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_radar_hdg_marker_node->setBoolValue(true);
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_x_offset = 0;
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_y_offset = 0;
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// OSG geometry setup. The polygons for the radar returns will be
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// stored in a single Geometry. The geometry will have several
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// primitive sets so we can have different kinds of polys and
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// choose a different overall color for each set.
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_radarGeode = new osg::Geode;
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osg::StateSet *stateSet = _radarGeode->getOrCreateStateSet();
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stateSet->setTextureAttributeAndModes(0, _wxEcho.get());
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_geom = new osg::Geometry;
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_geom->setUseDisplayList(false);
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// Initially allocate space for 128 quads
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_vertices = new osg::Vec2Array;
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_vertices->setDataVariance(osg::Object::DYNAMIC);
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_vertices->reserve(128 * 4);
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_geom->setVertexArray(_vertices);
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_texCoords = new osg::Vec2Array;
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_texCoords->setDataVariance(osg::Object::DYNAMIC);
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_texCoords->reserve(128 * 4);
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_geom->setTexCoordArray(0, _texCoords);
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osg::Vec3Array *colors = new osg::Vec3Array;
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colors->push_back(osg::Vec3(1.0f, 1.0f, 1.0f)); // color of echos
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colors->push_back(osg::Vec3(1.0f, 0.0f, 0.0f)); // arc mask
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colors->push_back(osg::Vec3(0.0f, 0.0f, 0.0f)); // rest of mask
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_geom->setColorBinding(osg::Geometry::BIND_PER_PRIMITIVE_SET);
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_geom->setColorArray(colors);
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osg::PrimitiveSet *pset = new osg::DrawArrays(osg::PrimitiveSet::QUADS);
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pset->setDataVariance(osg::Object::DYNAMIC);
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_geom->addPrimitiveSet(pset);
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pset = new osg::DrawArrays(osg::PrimitiveSet::QUADS);
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pset->setDataVariance(osg::Object::DYNAMIC);
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_geom->addPrimitiveSet(pset);
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pset = new osg::DrawArrays(osg::PrimitiveSet::TRIANGLES);
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pset->setDataVariance(osg::Object::DYNAMIC);
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_geom->addPrimitiveSet(pset);
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_geom->setInitialBound(osg::BoundingBox(osg::Vec3f(-256.0f, -256.0f, 0.0f),
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osg::Vec3f(256.0f, 256.0f, 0.0f)));
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_radarGeode->addDrawable(_geom);
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_odg->allocRT();
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// Texture in the 2D panel system
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FGTextureManager::addTexture(_texture_path.c_str(), _odg->getTexture());
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_textGeode = new osg::Geode;
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osg::Camera *camera = _odg->getCamera();
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camera->addChild(_radarGeode.get());
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camera->addChild(_textGeode.get());
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updateFont();
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_time = 0.0;
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}
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// Local coordinates for each echo
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const osg::Vec3f echoCoords[4] = {
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osg::Vec3f(-.7f, -.7f, 0.0f), osg::Vec3f(.7f, -.7f, 0.0f),
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osg::Vec3f(.7f, .7f, 0.0f), osg::Vec3f(-.7f, .7f, 0.0f)
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};
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const osg::Vec2f echoTexCoords[4] = {
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osg::Vec2f(0.0f, 0.0f), osg::Vec2f(UNIT, 0.0f),
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osg::Vec2f(UNIT, UNIT), osg::Vec2f(0.0f, UNIT)
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};
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// helper
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static void
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addQuad(osg::Vec2Array *vertices, osg::Vec2Array *texCoords,
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const osg::Matrixf& transform, const osg::Vec2f& texBase)
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{
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for (int i = 0; i < 4; i++) {
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const osg::Vec3f coords = transform.preMult(echoCoords[i]);
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texCoords->push_back(texBase + echoTexCoords[i]);
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vertices->push_back(osg::Vec2f(coords.x(), coords.y()));
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}
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}
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// Rotate by a heading value
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static inline
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osg::Matrixf wxRotate(float angle)
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{
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return osg::Matrixf::rotate(angle, 0.0f, 0.0f, -1.0f);
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}
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void
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wxRadarBg::update (double delta_time_sec)
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{
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if (!_sceneryLoaded->getBoolValue())
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return;
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if (!_odg || !_serviceable_node->getBoolValue()) {
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_Instrument->setStringValue("status", "");
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return;
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}
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_time += delta_time_sec;
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if (_time < _interval)
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return;
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_time -= _interval;
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string mode = _Instrument->getStringValue("display-mode", "arc");
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if (mode == "map") {
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if (_display_mode != MAP) {
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_display_mode = MAP;
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center_map();
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}
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} else if (mode == "plan") {
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_display_mode = PLAN;}
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else if (mode == "bscan") {
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_display_mode = BSCAN;
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} else {
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_display_mode = ARC;
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}
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string switchKnob = _Instrument->getStringValue("switch", "on");
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if (switchKnob == "off") {
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_Instrument->setStringValue("status", "");
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} else if (switchKnob == "stby") {
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_Instrument->setStringValue("status", "STBY");
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} else if (switchKnob == "tst") {
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_Instrument->setStringValue("status", "TST");
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// find something interesting to do...
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} else {
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float r = _Instrument->getFloatValue("range", 40.0);
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if (r != _range_nm) {
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center_map();
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_range_nm = r;
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}
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_radar_ref_rng = _radar_ref_rng_node->getDoubleValue();
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_view_heading = fgGetDouble("/orientation/heading-deg") * SG_DEGREES_TO_RADIANS;
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_centerTrans.makeTranslate(0.0f, 0.0f, 0.0f);
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_scale = 200.0 / _range_nm;
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_angle_offset = 0;
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if (_display_mode == ARC) {
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_scale = 2*200.0f / _range_nm;
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_angle_offset = -_view_heading;
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_centerTrans.makeTranslate(0.0f, -200.0f, 0.0f);
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} else if (_display_mode == MAP) {
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apply_map_offset();
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bool centre = _radar_centre_node->getBoolValue();
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if (centre) {
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center_map();
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_radar_centre_node->setBoolValue(false);
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}
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//SG_LOG(SG_INSTR, SG_DEBUG, "Radar: displacement "
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// << _x_offset <<", "<<_y_offset
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// << " user_speed_east_fps * SG_FPS_TO_KT "
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// << user_speed_east_fps * SG_FPS_TO_KT
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// << " user_speed_north_fps * SG_FPS_TO_KT "
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// << user_speed_north_fps * SG_FPS_TO_KT
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// << " dt " << delta_time_sec);
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_centerTrans.makeTranslate(_x_offset, _y_offset, 0.0f);
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} else if (_display_mode == PLAN) {
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if (_radar_rotate_node->getBoolValue()) {
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_angle_offset = -_view_heading;
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}
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} else if (_display_mode == BSCAN) {
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_angle_offset = -_view_heading;
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} else {
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// rose
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}
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_vertices->clear();
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_texCoords->clear();
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_textGeode->removeDrawables(0, _textGeode->getNumDrawables());
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#if 0
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//TODO FIXME Mask below (only used for ARC mode) isn't properly aligned, i.e.
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// it assumes the a/c position at the center of the display - though it's somewhere at
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// bottom part for ARC mode.
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// The mask hadn't worked at all for a while (probably since the OSG port) due to
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// another bug (which is fixed now). Now, the mask is disabled completely until s.o.
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// adapted the coordinates below. And the mask is only really useful to limit displayed
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// weather blobs (not support yet).
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// Aircraft echos are already limited properly through wxradar's "limit-deg" property.
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{
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osg::DrawArrays *maskPSet
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= static_cast<osg::DrawArrays*>(_geom->getPrimitiveSet(1));
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osg::DrawArrays *trimaskPSet
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= static_cast<osg::DrawArrays*>(_geom->getPrimitiveSet(2));
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if (_display_mode == ARC) {
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// erase what is out of sight of antenna
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/*
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|\ /|
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| \ / |
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| \ / |
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---------
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---------
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*/
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float xOffset = 256.0f;
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float yOffset = 200.0f;
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int firstQuadVert = _vertices->size();
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_texCoords->push_back(osg::Vec2f(0.5f, 0.25f));
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_vertices->push_back(osg::Vec2f(-xOffset, 0.0 + yOffset));
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_texCoords->push_back(osg::Vec2f(1.0f, 0.25f));
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_vertices->push_back(osg::Vec2f(xOffset, 0.0 + yOffset));
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_texCoords->push_back(osg::Vec2f(1.0f, 0.5f));
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_vertices->push_back(osg::Vec2f(xOffset, 256.0 + yOffset));
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_texCoords->push_back(osg::Vec2f(0.5f, 0.5f));
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_vertices->push_back(osg::Vec2f(-xOffset, 256.0 + yOffset));
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maskPSet->set(osg::PrimitiveSet::QUADS, firstQuadVert, 4);
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firstQuadVert += 4;
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// The triangles aren't supposed to be textured, but there's
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// no need to set up a different Geometry, switch modes,
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// etc. I happen to know that there's a white pixel in the
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// texture at 1.0, 0.0 :)
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float centerY = tan(30 * SG_DEGREES_TO_RADIANS);
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_vertices->push_back(osg::Vec2f(0.0, 0.0));
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_vertices->push_back(osg::Vec2f(-256.0, 0.0));
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_vertices->push_back(osg::Vec2f(-256.0, 256.0 * centerY));
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_vertices->push_back(osg::Vec2f(0.0, 0.0));
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_vertices->push_back(osg::Vec2f(256.0, 0.0));
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_vertices->push_back(osg::Vec2f(256.0, 256.0 * centerY));
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_vertices->push_back(osg::Vec2f(-256, 0.0));
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_vertices->push_back(osg::Vec2f(256.0, 0.0));
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_vertices->push_back(osg::Vec2f(-256.0, -256.0));
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_vertices->push_back(osg::Vec2f(256, 0.0));
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_vertices->push_back(osg::Vec2f(256.0, -256.0));
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_vertices->push_back(osg::Vec2f(-256.0, -256.0));
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|
const osg::Vec2f whiteSpot(1.0f, 0.0f);
|
|
for (int i = 0; i < 3 * 4; i++)
|
|
_texCoords->push_back(whiteSpot);
|
|
|
|
trimaskPSet->set(osg::PrimitiveSet::TRIANGLES, firstQuadVert, 3 * 4);
|
|
|
|
} else
|
|
{
|
|
maskPSet->set(osg::PrimitiveSet::QUADS, 0, 0);
|
|
trimaskPSet->set(osg::PrimitiveSet::TRIANGLES, 0, 0);
|
|
}
|
|
|
|
maskPSet->dirty();
|
|
trimaskPSet->dirty();
|
|
}
|
|
#endif
|
|
|
|
// remember index of next vertex
|
|
int vIndex = _vertices->size();
|
|
|
|
update_weather();
|
|
|
|
osg::DrawArrays *quadPSet
|
|
= static_cast<osg::DrawArrays*>(_geom->getPrimitiveSet(0));
|
|
|
|
update_aircraft();
|
|
update_tacan();
|
|
update_heading_marker();
|
|
|
|
// draw all new vertices are quads
|
|
quadPSet->set(osg::PrimitiveSet::QUADS, vIndex, _vertices->size()-vIndex);
|
|
quadPSet->dirty();
|
|
}
|
|
}
|
|
|
|
|
|
void
|
|
wxRadarBg::update_weather()
|
|
{
|
|
string modeButton = _Instrument->getStringValue("mode", "WX");
|
|
// FIXME: implementation of radar echoes missing
|
|
// _radarEchoBuffer = *sgEnviro.get_radar_echo();
|
|
|
|
// pretend we have a scan angle bigger then the FOV
|
|
// TODO:check real fov, enlarge if < nn, and do clipping if > mm
|
|
// const float fovFactor = 1.45f;
|
|
_Instrument->setStringValue("status", modeButton.c_str());
|
|
|
|
// FIXME: implementation of radar echoes missing
|
|
#if 0
|
|
list_of_SGWxRadarEcho *radarEcho = &_radarEchoBuffer;
|
|
list_of_SGWxRadarEcho::iterator iradarEcho, end = radarEcho->end();
|
|
const float LWClevel[] = { 0.1f, 0.5f, 2.1f };
|
|
|
|
// draw the cloud radar echo
|
|
bool drawClouds = _radar_weather_node->getBoolValue();
|
|
if (drawClouds) {
|
|
|
|
// we do that in 3 passes, one for each color level
|
|
// this is to 'merge' same colors together
|
|
for (int level = 0; level <= 2; level++) {
|
|
float col = level * UNIT;
|
|
|
|
for (iradarEcho = radarEcho->begin(); iradarEcho != end; ++iradarEcho) {
|
|
int cloudId = iradarEcho->cloudId;
|
|
bool upgrade = (cloudId >> 5) & 1;
|
|
float lwc = iradarEcho->LWC + (upgrade ? 1.0f : 0.0f);
|
|
|
|
// skip ns
|
|
if (iradarEcho->LWC >= 0.5 && iradarEcho->LWC <= 0.6)
|
|
continue;
|
|
|
|
if (iradarEcho->lightning || lwc < LWClevel[level])
|
|
continue;
|
|
|
|
float radius = sqrt(iradarEcho->dist) * SG_METER_TO_NM * _scale;
|
|
float size = iradarEcho->radius * 2.0 * SG_METER_TO_NM * _scale;
|
|
|
|
if (radius - size > 180)
|
|
continue;
|
|
|
|
float angle = (iradarEcho->heading - _angle_offset) //* fovFactor
|
|
+ 0.5 * SG_PI;
|
|
|
|
// Rotate echo into position, and rotate echo to have
|
|
// a constant orientation towards the
|
|
// airplane. Compass headings increase in clockwise
|
|
// direction, while graphics rotations follow
|
|
// right-hand (counter-clockwise) rule.
|
|
const osg::Vec2f texBase(col, (UNIT * (float) (4 + (cloudId & 3))));
|
|
|
|
osg::Matrixf m(osg::Matrixf::scale(size, size, 1.0f)
|
|
* osg::Matrixf::translate(0.0f, radius, 0.0f)
|
|
* wxRotate(angle) * _centerTrans);
|
|
addQuad(_vertices, _texCoords, m, texBase);
|
|
|
|
//SG_LOG(SG_INSTR, SG_DEBUG, "Radar: drawing clouds"
|
|
// << " ID=" << cloudId
|
|
// << " x=" << x
|
|
// << " y="<< y
|
|
// << " radius=" << radius
|
|
// << " view_heading=" << _view_heading * SG_RADIANS_TO_DEGREES
|
|
// << " heading=" << iradarEcho->heading * SG_RADIANS_TO_DEGREES
|
|
// << " angle=" << angle * SG_RADIANS_TO_DEGREES);
|
|
}
|
|
}
|
|
}
|
|
|
|
// draw lightning echos
|
|
bool drawLightning = _Instrument->getBoolValue("lightning", true);
|
|
if (drawLightning) {
|
|
const osg::Vec2f texBase(3 * UNIT, 4 * UNIT);
|
|
|
|
for (iradarEcho = radarEcho->begin(); iradarEcho != end; ++iradarEcho) {
|
|
if (!iradarEcho->lightning)
|
|
continue;
|
|
|
|
float size = UNIT * 0.5f;
|
|
float radius = iradarEcho->dist * _scale;
|
|
float angle = iradarEcho->heading * SG_DEGREES_TO_RADIANS
|
|
- _angle_offset;
|
|
|
|
osg::Matrixf m(osg::Matrixf::scale(size, size, 1.0f)
|
|
* wxRotate(-angle)
|
|
* osg::Matrixf::translate(0.0f, radius, 0.0f)
|
|
* wxRotate(angle) * _centerTrans);
|
|
addQuad(_vertices, _texCoords, m, texBase);
|
|
}
|
|
}
|
|
#endif
|
|
}
|
|
|
|
|
|
void
|
|
wxRadarBg::update_data(const SGPropertyNode *ac, double altitude, double heading,
|
|
double radius, double bearing, bool selected)
|
|
{
|
|
osgText::Text *callsign = new osgText::Text;
|
|
callsign->setFont(_font.get());
|
|
callsign->setFontResolution(12, 12);
|
|
callsign->setCharacterSize(_font_size);
|
|
callsign->setColor(selected ? osg::Vec4(1, 1, 1, 1) : _font_color);
|
|
osg::Matrixf m(wxRotate(-bearing)
|
|
* osg::Matrixf::translate(0.0f, radius, 0.0f)
|
|
* wxRotate(bearing) * _centerTrans);
|
|
|
|
osg::Vec3 pos = m.preMult(osg::Vec3(16, 16, 0));
|
|
// cast to int's, otherwise text comes out ugly
|
|
callsign->setPosition(osg::Vec3((int)pos.x(), (int)pos.y(), 0));
|
|
callsign->setAlignment(osgText::Text::LEFT_BOTTOM_BASE_LINE);
|
|
callsign->setLineSpacing(_font_spacing);
|
|
|
|
const char *identity = ac->getStringValue("transponder-id");
|
|
if (!identity[0])
|
|
identity = ac->getStringValue("callsign");
|
|
|
|
stringstream text;
|
|
text << identity << endl
|
|
<< setprecision(0) << fixed
|
|
<< setw(3) << setfill('0') << heading * SG_RADIANS_TO_DEGREES << "\xB0 "
|
|
<< setw(0) << altitude << "ft" << endl
|
|
<< ac->getDoubleValue("velocities/true-airspeed-kt") << "kts";
|
|
|
|
callsign->setText(text.str());
|
|
_textGeode->addDrawable(callsign);
|
|
}
|
|
|
|
|
|
void
|
|
wxRadarBg::update_aircraft()
|
|
{
|
|
double diff;
|
|
double age_factor = 1.0;
|
|
double test_rng;
|
|
double test_brg;
|
|
double range;
|
|
double bearing;
|
|
float echo_radius;
|
|
double angle;
|
|
|
|
if (!ground_echoes.empty()){
|
|
ground_echoes_iterator = ground_echoes.begin();
|
|
|
|
while(ground_echoes_iterator != ground_echoes.end()) {
|
|
diff = _elapsed_time - (*ground_echoes_iterator)->elapsed_time;
|
|
|
|
if( diff > _persistance) {
|
|
ground_echoes.erase(ground_echoes_iterator++);
|
|
} else {
|
|
// double test_brg = (*ground_echoes_iterator)->bearing;
|
|
// double bearing = test_brg * SG_DEGREES_TO_RADIANS;
|
|
// float angle = calcRelBearing(bearing, _view_heading);
|
|
double bumpinessFactor = (*ground_echoes_iterator)->bumpiness;
|
|
float heading = fgGetDouble("/orientation/heading-deg");
|
|
if ( _display_mode == BSCAN ){
|
|
test_rng = (*ground_echoes_iterator)->elevation * 6;
|
|
test_brg = (*ground_echoes_iterator)->bearing;
|
|
angle = calcRelBearingDeg(test_brg, heading) * 6;
|
|
range = sqrt(test_rng * test_rng + angle * angle);
|
|
bearing = atan2(angle, test_rng);
|
|
//cout << "angle " << angle <<" bearing "
|
|
// << bearing / SG_DEGREES_TO_RADIANS << endl;
|
|
echo_radius = (0.1 + (1.9 * bumpinessFactor)) * 240 * age_factor;
|
|
} else {
|
|
test_rng = (*ground_echoes_iterator)->range;
|
|
range = test_rng * SG_METER_TO_NM;
|
|
test_brg = (*ground_echoes_iterator)->bearing;
|
|
bearing = test_brg * SG_DEGREES_TO_RADIANS;
|
|
echo_radius = (0.1 + (1.9 * bumpinessFactor)) * 120 * age_factor;
|
|
bearing += _angle_offset;
|
|
}
|
|
|
|
float radius = range * _scale;
|
|
//double heading = 90 * SG_DEGREES_TO_RADIANS;
|
|
//heading += _angle_offset;
|
|
|
|
age_factor = 1;
|
|
|
|
if (diff != 0)
|
|
age_factor = 1 - (0.5 * diff/_persistance);
|
|
|
|
float size = echo_radius * UNIT;
|
|
|
|
const osg::Vec2f texBase(3 * UNIT, 3 * UNIT);
|
|
osg::Matrixf m(osg::Matrixf::scale(size, size, 1.0f)
|
|
* osg::Matrixf::translate(0.0f, radius, 0.0f)
|
|
* wxRotate(bearing) * _centerTrans);
|
|
addQuad(_vertices, _texCoords, m, texBase);
|
|
|
|
++ground_echoes_iterator;
|
|
|
|
//cout << "test bearing " << test_brg
|
|
//<< " test_rng " << test_rng * SG_METER_TO_NM
|
|
//<< " persistance " << _persistance
|
|
//<< endl;
|
|
}
|
|
|
|
}
|
|
|
|
}
|
|
if (!_ai_enabled_node->getBoolValue())
|
|
return;
|
|
|
|
bool draw_tcas = _radar_tcas_node->getBoolValue();
|
|
bool draw_absolute = _radar_absalt_node->getBoolValue();
|
|
bool draw_echoes = _radar_position_node->getBoolValue();
|
|
bool draw_symbols = _radar_symbol_node->getBoolValue();
|
|
bool draw_data = _radar_data_node->getBoolValue();
|
|
if (!draw_echoes && !draw_symbols && !draw_data)
|
|
return;
|
|
|
|
double user_lat = _user_lat_node->getDoubleValue();
|
|
double user_lon = _user_lon_node->getDoubleValue();
|
|
double user_alt = _user_alt_node->getDoubleValue();
|
|
|
|
float limit = _radar_coverage_node->getFloatValue();
|
|
if (limit > 180)
|
|
limit = 180;
|
|
else if (limit < 0)
|
|
limit = 0;
|
|
limit *= SG_DEGREES_TO_RADIANS;
|
|
|
|
int selected_id = fgGetInt("/instrumentation/radar/selected-id", -1);
|
|
|
|
const SGPropertyNode *selected_ac = 0;
|
|
const SGPropertyNode *ai = fgGetNode("/ai/models", true);
|
|
|
|
for (int i = ai->nChildren() - 1; i >= -1; i--) {
|
|
const SGPropertyNode *model;
|
|
|
|
if (i < 0) { // last iteration: selected model
|
|
model = selected_ac;
|
|
} else {
|
|
model = ai->getChild(i);
|
|
if (!model->nChildren())
|
|
continue;
|
|
if ((model->getIntValue("id") == selected_id)&&
|
|
(!draw_tcas)) {
|
|
selected_ac = model; // save selected model for last iteration
|
|
continue;
|
|
}
|
|
}
|
|
if (!model)
|
|
continue;
|
|
|
|
double echo_radius, sigma;
|
|
const string name = model->getName();
|
|
|
|
//cout << "name "<<name << endl;
|
|
if (name == "aircraft" || name == "tanker")
|
|
echo_radius = 1, sigma = 1;
|
|
else if (name == "multiplayer" || name == "wingman" || name == "static")
|
|
echo_radius = 1.5, sigma = 1;
|
|
else if (name == "ship" || name == "carrier" || name == "escort" ||name == "storm")
|
|
echo_radius = 1.5, sigma = 100;
|
|
else if (name == "thermal")
|
|
echo_radius = 2, sigma = 100;
|
|
else if (name == "rocket")
|
|
echo_radius = 0.1, sigma = 0.1;
|
|
else if (name == "ballistic")
|
|
echo_radius = 0.001, sigma = 0.001;
|
|
else
|
|
continue;
|
|
|
|
double lat = model->getDoubleValue("position/latitude-deg");
|
|
double lon = model->getDoubleValue("position/longitude-deg");
|
|
double alt = model->getDoubleValue("position/altitude-ft");
|
|
double heading = model->getDoubleValue("orientation/true-heading-deg");
|
|
|
|
double range, bearing;
|
|
calcRangeBearing(user_lat, user_lon, lat, lon, range, bearing);
|
|
//cout << _antenna_ht << _interval<< endl;
|
|
bool isVisible = withinRadarHorizon(user_alt, alt, range);
|
|
|
|
if (!isVisible)
|
|
continue;
|
|
|
|
if (!inRadarRange(sigma, range))
|
|
continue;
|
|
|
|
bearing *= SG_DEGREES_TO_RADIANS;
|
|
heading *= SG_DEGREES_TO_RADIANS;
|
|
|
|
float radius = range * _scale;
|
|
float angle = calcRelBearing(bearing, _view_heading);
|
|
|
|
if (angle > limit || angle < -limit)
|
|
continue;
|
|
|
|
bearing += _angle_offset;
|
|
heading += _angle_offset;
|
|
|
|
bool is_tcas_contact = false;
|
|
if (draw_tcas)
|
|
{
|
|
is_tcas_contact = update_tcas(model,range,user_alt,alt,bearing,radius,draw_absolute);
|
|
}
|
|
|
|
// pos mode
|
|
if (draw_echoes && (!is_tcas_contact)) {
|
|
float size = echo_radius * 120 * UNIT;
|
|
|
|
const osg::Vec2f texBase(3 * UNIT, 3 * UNIT);
|
|
osg::Matrixf m(osg::Matrixf::scale(size, size, 1.0f)
|
|
* osg::Matrixf::translate(0.0f, radius, 0.0f)
|
|
* wxRotate(bearing) * _centerTrans);
|
|
addQuad(_vertices, _texCoords, m, texBase);
|
|
}
|
|
|
|
// data mode
|
|
if (draw_symbols && (!draw_tcas)) {
|
|
const osg::Vec2f texBase(0, 3 * UNIT);
|
|
float size = 600 * UNIT;
|
|
osg::Matrixf m(osg::Matrixf::scale(size, size, 1.0f)
|
|
* wxRotate(heading - bearing)
|
|
* osg::Matrixf::translate(0.0f, radius, 0.0f)
|
|
* wxRotate(bearing) * _centerTrans);
|
|
addQuad(_vertices, _texCoords, m, texBase);
|
|
}
|
|
|
|
if ((draw_data || i < 0)&& // selected one (i == -1) is always drawn
|
|
((!draw_tcas)||(is_tcas_contact)||(draw_echoes)))
|
|
update_data(model, alt, heading, radius, bearing, i < 0);
|
|
}
|
|
}
|
|
|
|
/** Update TCAS display.
|
|
* Return true when processed as TCAS contact, false otherwise. */
|
|
bool
|
|
wxRadarBg::update_tcas(const SGPropertyNode *model,double range,double user_alt,double alt,
|
|
double bearing,double radius,bool absMode)
|
|
{
|
|
int threatLevel=0;
|
|
{
|
|
// update TCAS symbol
|
|
osg::Vec2f texBase;
|
|
threatLevel = model->getIntValue("tcas/threat-level",-1);
|
|
if (threatLevel == -1)
|
|
{
|
|
// no TCAS information (i.e. no transponder) => not visible to TCAS
|
|
return false;
|
|
}
|
|
int row = 7 - threatLevel;
|
|
int col = 4;
|
|
double vspeed = model->getDoubleValue("velocities/vertical-speed-fps");
|
|
if (vspeed < -3.0) // descending
|
|
col+=1;
|
|
else
|
|
if (vspeed > 3.0) // climbing
|
|
col+=2;
|
|
texBase = osg::Vec2f(col*UNIT,row * UNIT);
|
|
float size = 200 * UNIT;
|
|
osg::Matrixf m(osg::Matrixf::scale(size, size, 1.0f)
|
|
* wxRotate(-bearing)
|
|
* osg::Matrixf::translate(0.0f, radius, 0.0f)
|
|
* wxRotate(bearing) * _centerTrans);
|
|
addQuad(_vertices, _texCoords, m, texBase);
|
|
}
|
|
|
|
{
|
|
// update TCAS data
|
|
osgText::Text *altStr = new osgText::Text;
|
|
altStr->setFont(_font.get());
|
|
altStr->setFontResolution(12, 12);
|
|
altStr->setCharacterSize(_font_size);
|
|
altStr->setColor(_tcas_colors[threatLevel]);
|
|
osg::Matrixf m(wxRotate(-bearing)
|
|
* osg::Matrixf::translate(0.0f, radius, 0.0f)
|
|
* wxRotate(bearing) * _centerTrans);
|
|
|
|
osg::Vec3 pos = m.preMult(osg::Vec3(16, 16, 0));
|
|
// cast to int's, otherwise text comes out ugly
|
|
altStr->setLineSpacing(_font_spacing);
|
|
|
|
stringstream text;
|
|
altStr->setAlignment(osgText::Text::LEFT_CENTER);
|
|
int altDif = (alt-user_alt+50)/100;
|
|
char sign = 0;
|
|
int dy=0;
|
|
if (altDif>=0)
|
|
{
|
|
sign='+';
|
|
dy=2;
|
|
}
|
|
else
|
|
if (altDif<0)
|
|
{
|
|
sign='-';
|
|
altDif = -altDif;
|
|
dy=-30;
|
|
}
|
|
altStr->setPosition(osg::Vec3((int)pos.x()-30, (int)pos.y()+dy, 0));
|
|
if (absMode)
|
|
{
|
|
// absolute altitude display
|
|
text << setprecision(0) << fixed
|
|
<< setw(3) << setfill('0') << alt/100 << endl;
|
|
}
|
|
else // relative altitude display
|
|
if (sign)
|
|
{
|
|
text << sign
|
|
<< setprecision(0) << fixed
|
|
<< setw(2) << setfill('0') << altDif << endl;
|
|
}
|
|
|
|
altStr->setText(text.str());
|
|
_textGeode->addDrawable(altStr);
|
|
}
|
|
|
|
return true;
|
|
}
|
|
|
|
void
|
|
wxRadarBg::update_tacan()
|
|
{
|
|
// draw TACAN symbol
|
|
int mode = _radar_mode_control_node->getIntValue();
|
|
bool inRange = _tacan_in_range_node->getBoolValue();
|
|
|
|
if (mode != 1 || !inRange)
|
|
return;
|
|
|
|
float size = 600 * UNIT;
|
|
float radius = _tacan_distance_node->getFloatValue() * _scale;
|
|
float angle = _tacan_bearing_node->getFloatValue() * SG_DEGREES_TO_RADIANS
|
|
+ _angle_offset;
|
|
|
|
const osg::Vec2f texBase(1 * UNIT, 3 * UNIT);
|
|
osg::Matrixf m(osg::Matrixf::scale(size, size, 1.0f)
|
|
* wxRotate(-angle)
|
|
* osg::Matrixf::translate(0.0f, radius, 0.0f)
|
|
* wxRotate(angle) * _centerTrans);
|
|
addQuad(_vertices, _texCoords, m, texBase);
|
|
|
|
//SG_LOG(SG_INSTR, SG_DEBUG, "Radar: drawing TACAN"
|
|
// << " dist=" << radius
|
|
// << " view_heading=" << _view_heading * SG_RADIANS_TO_DEGREES
|
|
// << " bearing=" << angle * SG_RADIANS_TO_DEGREES
|
|
// << " x=" << x << " y="<< y
|
|
// << " size=" << size);
|
|
}
|
|
|
|
|
|
void
|
|
wxRadarBg::update_heading_marker()
|
|
{
|
|
if (!_radar_hdg_marker_node->getBoolValue())
|
|
return;
|
|
|
|
const osg::Vec2f texBase(2 * UNIT, 3 * UNIT);
|
|
float size = 600 * UNIT;
|
|
osg::Matrixf m(osg::Matrixf::scale(size, size, 1.0f)
|
|
* wxRotate(_view_heading + _angle_offset));
|
|
|
|
m *= _centerTrans;
|
|
addQuad(_vertices, _texCoords, m, texBase);
|
|
|
|
//SG_LOG(SG_INSTR, SG_DEBUG, "Radar: drawing heading marker"
|
|
// << " x,y " << x <<","<< y
|
|
// << " dist" << dist
|
|
// << " view_heading" << _view_heading * SG_RADIANS_TO_DEGREES
|
|
// << " heading " << iradarEcho->heading * SG_RADIANS_TO_DEGREES
|
|
// << " angle " << angle * SG_RADIANS_TO_DEGREES);
|
|
}
|
|
|
|
|
|
void
|
|
wxRadarBg::center_map()
|
|
{
|
|
_lat = _user_lat_node->getDoubleValue();
|
|
_lon = _user_lon_node->getDoubleValue();
|
|
_x_offset = _y_offset = 0;
|
|
}
|
|
|
|
|
|
void
|
|
wxRadarBg::apply_map_offset()
|
|
{
|
|
double lat = _user_lat_node->getDoubleValue();
|
|
double lon = _user_lon_node->getDoubleValue();
|
|
double bearing, distance, az2;
|
|
geo_inverse_wgs_84(_lat, _lon, lat, lon, &bearing, &az2, &distance);
|
|
distance *= SG_METER_TO_NM * _scale;
|
|
bearing *= SG_DEGREES_TO_RADIANS;
|
|
_x_offset += sin(bearing) * distance;
|
|
_y_offset += cos(bearing) * distance;
|
|
_lat = lat;
|
|
_lon = lon;
|
|
}
|
|
|
|
|
|
bool
|
|
wxRadarBg::withinRadarHorizon(double user_alt, double alt, double range_nm)
|
|
{
|
|
// Radar Horizon = 1.23(ht^1/2 + hr^1/2),
|
|
//don't allow negative altitudes (an approximation - yes altitudes can be negative)
|
|
// Allow antenna ht to be set, but only on ground
|
|
_antenna_ht = _Instrument->getDoubleValue("antenna-ht-ft");
|
|
|
|
if (user_alt <= 0)
|
|
user_alt = _antenna_ht;
|
|
|
|
if (alt <= 0)
|
|
alt = 0; // to allow some vertical extent of target
|
|
|
|
double radarhorizon = 1.23 * (sqrt(alt) + sqrt(user_alt));
|
|
// SG_LOG(SG_INSTR, SG_ALERT, "Radar: radar horizon " << radarhorizon);
|
|
return radarhorizon >= range_nm;
|
|
}
|
|
|
|
|
|
bool
|
|
wxRadarBg::inRadarRange(double sigma, double range_nm)
|
|
{
|
|
//The Radar Equation:
|
|
//
|
|
// MaxRange^4 = (TxPower * AntGain^2 * lambda^2 * sigma)/((constant) * MDS)
|
|
//
|
|
// Where (constant) = (4*pi)3 and MDS is the Minimum Detectable Signal power.
|
|
//
|
|
// For a given radar we can assume that the only variable is sigma,
|
|
// the target radar cross section.
|
|
//
|
|
// Here, we will use a normalised rcs (sigma) for a standard taget and assume that this
|
|
// will provide a maximum range of 35nm;
|
|
//
|
|
// TODO - make the maximum range adjustable at runtime
|
|
|
|
double constant = _radar_ref_rng;
|
|
|
|
if (constant <= 0)
|
|
constant = 35;
|
|
|
|
double maxrange = constant * pow(sigma, 0.25);
|
|
//SG_LOG(SG_INSTR, SG_DEBUG, "Radar: max range " << maxrange);
|
|
return maxrange >= range_nm;
|
|
}
|
|
|
|
|
|
void
|
|
wxRadarBg::calcRangeBearing(double lat, double lon, double lat2, double lon2,
|
|
double &range, double &bearing) const
|
|
{
|
|
// calculate the bearing and range of the second pos from the first
|
|
double az2, distance;
|
|
geo_inverse_wgs_84(lat, lon, lat2, lon2, &bearing, &az2, &distance);
|
|
range = distance *= SG_METER_TO_NM;
|
|
}
|
|
|
|
|
|
float
|
|
wxRadarBg::calcRelBearing(float bearing, float heading)
|
|
{
|
|
float angle = bearing - heading;
|
|
|
|
if (angle >= SG_PI)
|
|
angle -= 2.0 * SG_PI;
|
|
|
|
if (angle < -SG_PI)
|
|
angle += 2.0 * SG_PI;
|
|
|
|
return angle;
|
|
}
|
|
|
|
float
|
|
wxRadarBg::calcRelBearingDeg(float bearing, float heading)
|
|
{
|
|
float angle = bearing - heading;
|
|
|
|
if (angle >= 180)
|
|
return angle -= 360;
|
|
|
|
if (angle < -180)
|
|
return angle += 360;
|
|
|
|
return angle;
|
|
}
|
|
|
|
|
|
void
|
|
wxRadarBg::updateFont()
|
|
{
|
|
float red = _font_node->getFloatValue("color/red");
|
|
float green = _font_node->getFloatValue("color/green");
|
|
float blue = _font_node->getFloatValue("color/blue");
|
|
float alpha = _font_node->getFloatValue("color/alpha");
|
|
_font_color.set(red, green, blue, alpha);
|
|
|
|
_font_size = _font_node->getFloatValue("size");
|
|
_font_spacing = _font_size * _font_node->getFloatValue("line-spacing");
|
|
string path = _font_node->getStringValue("name", DEFAULT_FONT);
|
|
|
|
SGPath tpath;
|
|
if (path[0] != '/') {
|
|
tpath = globals->get_fg_root();
|
|
tpath.append("Fonts");
|
|
tpath.append(path);
|
|
} else {
|
|
tpath = path;
|
|
}
|
|
|
|
osg::ref_ptr<osgDB::ReaderWriter::Options> fontOptions = new osgDB::ReaderWriter::Options("monochrome");
|
|
osg::ref_ptr<osgText::Font> font = osgText::readFontFile(tpath.c_str(), fontOptions.get());
|
|
|
|
if (font != 0) {
|
|
_font = font;
|
|
_font->setMinFilterHint(osg::Texture::NEAREST);
|
|
_font->setMagFilterHint(osg::Texture::NEAREST);
|
|
_font->setGlyphImageMargin(0);
|
|
_font->setGlyphImageMarginRatio(0);
|
|
}
|
|
|
|
for (int i=0;i<4;i++)
|
|
{
|
|
const float defaultColors[4][3] = {{0,1,1},{0,1,1},{1,0.5,0},{1,0,0}};
|
|
SGPropertyNode_ptr color_node = _font_node->getNode("tcas/color",i,true);
|
|
float red = color_node->getFloatValue("red",defaultColors[i][0]);
|
|
float green = color_node->getFloatValue("green",defaultColors[i][1]);
|
|
float blue = color_node->getFloatValue("blue",defaultColors[i][2]);
|
|
float alpha = color_node->getFloatValue("alpha",1);
|
|
_tcas_colors[i]=osg::Vec4(red, green, blue, alpha);
|
|
}
|
|
}
|
|
|
|
void
|
|
wxRadarBg::valueChanged(SGPropertyNode*)
|
|
{
|
|
updateFont();
|
|
_time = _interval;
|
|
}
|
|
|